公开(公告)号：US20170081481A1

公开(公告)日：2017-03-23

申请号：US15119857

申请日：2015-02-16

Applicant: BASF SE

Inventor： Joerg ERBES ,  Gerhard LANGE ,  Tobias KORTEKAMP ,  Bernhard LINNER ,  Cecile SCHNEIDER ,  Angela ULZHOEFER ,  Robert KEINZ ,  Michael Klemens MUELLER

IPC: C08J3/14 ,  F26B5/14 ,  F26B3/08

CPC classification number: C08J3/14 ,  B29B13/065 ,  C08J3/12 ,  C08J2381/06 ,  F26B3/08 ,  F26B5/14 ,  F26B2200/08

Abstract: The present invention relates to a process for drying particulate polymers, comprising the steps of: a) providing a particulate polymer comprising from 60 wt % to 90 wt % of at least one solvent based on the total weight of particulate polymer and solvent, b) mechanically predrying the particulate polymer to a content of the at least one solvent of from 20 wt % to 50 wt % based on the total weight of particulate polymer and solvent, wherein the mechanical predrying in step b) is carried out with a roller press, and c) end-drying the particulate polymer to a content of the at least one solvent of from 0 wt % to 15 wt % based on the total weight of particulate polymer and solvent, wherein the particulate polymer is a polymer comprising repeating units of formulae I, II and/or III The present invention further relates to a process for working up particulate polymers.